Milwaukee police officers Xavier Benitez and Adam Bradley went after a speeder just after 10 p.m. Wednesday night near the Summerfest grounds.

"Because he was beeping the horn and speeding, so they thought he was a drunk driver or something," mom Brenda Alva said.

The driver, Alva's husband was pretty convincing. Both officers approached with caution but retreated with a telling transmission.

"Can we have medical respond to St. Paul and Water Street? We're delivering a baby," an officer said.

Alva was in labor, and the officers were in shock.

Minutes went by like seconds. Other officers and medics arrived just as little Isabella did, with everyone practically holding their breath until Isabella took her first.

"We immediately tried to clear her airways and remove the umbilical cord, and my partner is assisting me, you know, kind of flicking on the feet, you know, trying to get a response," Benitez said. "She was, we felt a pulse. She was moving, but we didn't get that gasp of air yet, and then when that came, everybody that was there was relieved. Other squads came with a blanket right away, and the medical arrived and helped cut the umbilical cord, and we followed the new father out to St. Mary's Hospital."

Luckily, the officers pulled the father over. He was trying to make it to Columbia St. Mary's, but never would have in time in the traffic.

The family, including a 5-year-old, who watched all this from the back seat, had been at dinner when mom went into labor. She wasn't due until Friday.

"I didn't believe it was happening at first until I saw her in my hands when she was born. I was like, 'Well, I guess she's here," Alva said.

For the officers this was the pull-over of their career.

"The Fire Department coming to our scene, trying to get the gloves on and rush back to the door. It doesn't compare to anything else," Bradley said.

Mom and baby were both doing fine Thursday.

"I just want to say thank you for all their help and the firemen and everybody that helped because it was a lot of help. It was something new. So it was good to have their help there," Alva said.

NEW AT TEN: WE HEAR FROM THE MOM WHO GAVE BIRTH IN A CAR--- WITH THE HELP OF SOME OF MILWAUKEE'S FINEST. 12 NEWS JASON NEWTON REPORTS...ON THE SPECIAL DELIVERY WITH A HAPPY ENDING. A FAST CHASE THROUGH DOWNTOWN MILWAUKEE. XAVIER BENITEZ: WE SAW A RED JUST BLOWING THROUGH THE RED LIGHTS BLARING ON HIS HORN. THEY'D DO ABOUT 50 IN PURSUIT... BRENDA ALVA'S RECOVERING AFTER BEING IN THAT CAR... BRENDA ALVA: CAUSE HE WAS BEEPING THE HORN AND SPEEDING SO THEY THOUGHT HE WAS A DRUNK DRIVER OR SOMETHING. THE DRIVER, ALVA'S HUSBAND WAS PRETTY CONVINCING. BOTH OFFICERS APPROACH WITH CAUTION ... BUT RETREAT WITH A TELLING TRANSMISSION ... "CAN WE HAVE MEDICAL RESPOND TO ST. PAUL AND WATER STREET... WE'RE DELIVERING A BABY." ALVA WAS IN LABOR. BRENDA ALVA: TRIED TO MAKE IT AS FAST AS WE CAN, BUT WE DIDN'T MAKE IT LAUGHS. AND OFFICERS XAVIER BENITEZ AND ADAM BRADLEY WERE IN SHOCK. ADAM BRADLEY: AT THAT POINT SHE WAS A LOT CALMER THAN I WAS... I'LL TELL YOU THAT. A TRIP BACK FROM DINNER BECAME A MAD DASH TO A HOSPITAL WEDNESDAY NIGHT... BUT SETTLED HERE AT WATER AND ST. PAUL. BRENDA ALVA: SHE WAS COMING OUT, THEY WERE PULLING OVER MY HUSBAND THEY DIDN'T KNOW WHAT WAS GOING ON THEY THOUGHT WE WERE COMING FROM SUMMERFEST OR SOMETHING. MINUTES WENT BY LIKE SECONDS. OTHER OFFICERS AND MEDICS WOULD ARRIVE... JUST AS LITTLE ISABELLA DID...WITH EVERYONE PRACTICALLY HOLDING THEIR BREATH UNTIL ISABELLA TOOK HER FIRST. BRENDA ALVA: I DIDN'T BELIEVE IT WAS HAPPENING AT FIRST UNTIL I SAW HER IN MY HANDS WHEN SHE WAS BORN. I WAS LIKE, WELL, I GUESS SHE'S HERE ISABELLA...IN PINK, IN MOM'S ARMS. 6 POUNDS 5 OUNCES ... BUT TONS OF DRAMA. BRENDA ALVA: I JUST WANT TO SAY THANK YOU FOR ALL THEIR HELP AND THE FIREMEN AND EVERYBODY THAT HELPED B/C IT WAS A LOT OF HELP. BABY AND MOM ARE FINE. BRENDA SAYS THEY WERE TRYING TO MAKE IT TO THE NEAREST HOSPITAL. JUST A COUPLE OF MINUTES AWAY... BUT WITH SUMMERFEST TRAFFIC, BIG BANG TRAFFIC, AND ROAD WORK...THE OFFICERS SAY THERE WAS NO WAY THEY WOULD HAVE MADE IT. THANKS, JASON.

Hillary Clinton's office said "nothing nefarious was at play" when the former secretary of state used her personal email address, rather than one provided by the State Department, during her four years as America's top diplomat.